The AirTAC GFR400C15LJC1WT AirTAC Filter Regulator NPT1/2, 5um is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400C15LJC1WT is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is ordered with 1/2 in NPT ports, a fine 5 um filter element (code W), a differential-pressure drain that bleeds collected condensate automatically as pressure drop builds, and the low-pressure regulator type for circuits set below the standard range. A round pressure gauge on the MPa scale is fitted so the downstream setting is visible at a glance, and no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this unit is metal.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the family you can choose drain type (differential-pressure, automatic or manual), filter grade (40 um standard or 5 um), gauge style and scale, thread (PT is the standard, with G and NPT as catalogue options) and bracket provision. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR400C15LJC1WT AirTAC Filter Regulator NPT1/2, 5um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeds the clamp cylinders of a press line that holds workpieces at a low regulated setpoint, with the 5 um element keeping the clamp valve seats clean and the round MPa gauge letting the setter verify the holding pressure.
Sits at the bench drop feeding air-operated sample-prep tools that run below standard line pressure, filtering water and fine particulate from the shop air and giving the operator a visible, adjustable low-pressure setting.
Installed on the 1/2 in supply drop of a machining centre's low-pressure actuator circuit, removing condensate and 5 um-scale particles ahead of sensitive pilot valves while holding a steady reduced pressure.
Start with the size and port: the 400 frame with 1/2 in NPT ports suits lines where larger supply piping is already in place, and the right step is the one whose flow curve covers your consumption with margin - we can check that against the datasheet before you order. This unit carries the 5 um element (W); the standard grade is 40 um, so choose 5 um where downstream valves and instruments need finer protection. Drain is differential-pressure here; automatic (A) and manual (M) drains are alternatives if your duty or maintenance routine calls for them. The gauge fitted is the external round type on the MPa scale; square embedded gauges and psi or bar scales are the other catalogue choices. Thread: PT is the AirTAC standard and G (BSPP) and NPT are ordered options - this code is the NPT version. A bracket can be added on the J-less variants; this one is ordered without.
One honest routing note: because flow is published as curves and not a single rating, and the low-pressure type's regulation range is not stated as a single figure either, send us your line pressure, set pressure and air consumption and we will confirm suitability from the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and air consumption and we will confirm the sizing against the datasheet curves on request before you order.
The L marks the low-pressure regulator type, intended for circuits set below the standard range; AirTAC does not publish a single range figure for this variant, so we confirm the exact limits from the datasheet on request. If your setpoint sits in the normal band, the standard-type GFR400 variants are the usual choice.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.